The non-volatile chemical constituents of a temporal gland secretion of a male Asian elephant are reported for the first time, and they seem to be different, in part, from those of African elephant.
Xylazine (0.1 mg/kg body weight) produced highly significant bradycardia and hypotension in recumbent Asian elephants, with a peak depression observed at the 30th minute for heart rate and 30th minute in the mean arterial pressure (MAP). Ketamine (1.25 : 1 ratio with xylazine) mildly marginalised the bradycardia, but remarkably improved the MAP. Yohimbine, used to reverse the sedation produced by xylazine did not appear to influence these parameters to any appreciable levels.
This study compares classification methods applied to an acoustic repertoire of the Asian elephant (Elephas maximus). Recordings were made of captive elephants at the Oregon Zoo in Portland, OR and of domesticated elephants in Thailand. Acoustic and behavioral data were collected in a variety of social contexts and environmental noise conditions. Calls were classified using three methods.
Habitat loss and hunting pressure threaten mammal populations worldwide, generating critical time constraints on trend assessment. This study introduces a new survey method that samples continuously and non-invasively over long time periods, obtaining estimates of abundance from vocalization rates. We present feasibility assessment methods for acoustic surveys and develop equations for estimating population size. As an illustration, we demonstrate the feasibility of acoustic surveys for African forest elephants (Loxodonta africana cyclotis).
Loxodonta africana are susceptible to a wide variety of parasites that are often treated with the broad spectrum antiparasitic ivermectin (IVM) based on empirical knowledge. The objectives of this study were to 1) measure plasma IVM levels following administration of 0.1 mg/kg IVM p.o., 2) compare plasma IVM levels following administration with regular versus restricted feed rations, 3) measure IVM excretion in feces, kind 4) use these findings to generate dosing recommendations for this species.